22021643020146 has 64 divisors (see below), whose sum is σ = 54915381734400. Its totient is φ = 5719462292160.

The previous prime is 22021643020141. The next prime is 22021643020241. The reversal of 22021643020146 is 64102034612022.

It is a super-2 number, since 2×22021643020146² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (22021643020141) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4111680 + ... + 7806996.

It is an arithmetic number, because the mean of its divisors is an integer number (858052839600).

Almost surely, 2^{22021643020146} is an apocalyptic number.

22021643020146 is an abundant number, since it is smaller than the sum of its proper divisors (32893738714254).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

22021643020146 is a wasteful number, since it uses less digits than its factorization.

22021643020146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3708239.

The product of its (nonzero) digits is 27648, while the sum is 33.

Adding to 22021643020146 its reverse (64102034612022), we get a palindrome (86123677632168).

The spelling of 22021643020146 in words is "twenty-two trillion, twenty-one billion, six hundred forty-three million, twenty thousand, one hundred forty-six".